Nick Squires

The short version

I buy, test, repair and resell hardware. Mostly ASIC miners, but the store also runs industrial automation parts, telecom power systems, enterprise networking and graphics cards. I wrote ING Listing Engine because listing a few hundred tested machines accurately was eating my week, and the tools I tried either didn't understand the category or wanted a subscription to tell me things my own sold data already knew.

Everything on this site is written by me, from that account. When a guide quotes a median price, I ran the query. When it shows a screen, I took the screenshot. When it says something didn't work, it didn't work here first.

eBay seller	ingmining — Top Rated Seller, 100% positive, 5.5K items sold, 731 followers (re-read at the source 11 August 2026)
Selling since	30 November 2009
Business	ING Mining LLC, Hanson, Massachusetts. ING MINING® is a registered U.S. trademark of Nicholas Squires
Also writes at	ingmining.com — bench testing, repair economics and mining break-even arithmetic
Code	github.com/essquireo0o — the app's source is public, including the licence and pricing code
Reach me	ns@ingmining.com · +1 (781) 577-0377 · contact page

What I actually handle, and why it shapes the writing

A used Antminer S19 is a machine somebody else ran hot for two or three years, and whether it is worth buying is not visible in a photograph. That is the same problem as pricing a listing: the title tells you almost nothing, and the average of a keyword search tells you less. Live on the store right now: Antminer S19s on VNish and Braiins firmware, S19 XP Pro hashboards sold tested and sold AS-IS, APW12 power supplies, universal hashboard test fixtures, a FANUC A05B-2301-C315 teach pendant, an Allen-Bradley PowerFlex 525, an Ericsson RBS 6000 baseband unit and an Eltek DC power system.

Selling that mix for sixteen years is where the specific things I write about come from:

• Sold comps are dirty and I can prove it. A 500-row pull for antminer s19 from my own sold-comp database — 897,135 rows now, 864,000 when I ran this one — had a raw median of $69.00 and a real one of $290.00 — and 22 of those rows were air conditioners, earbuds, a robot-vacuum battery and a pair of Vans. Here is how I clean a comp set before trusting the median.
• Identical listings do not fetch identical prices. Twenty-two completed sales of one byte-identical S19 XP title ranged from $175.50 to $455.00. What moves you inside that band is disclosure — firmware, tuning, whether it is whole or parted out.
• Repricing tools will happily cut a listing that is working. The first scan of my own 87 listings wanted $8,400 off one that had already sold 44 units and had 64 watchers.
• Watchers are the cheapest discount on eBay. 53 of my listings held 1,527 watchers between them, and eBay cleared 31 of those to carry a private offer — a discount that costs nothing at all when it is refused.
• Freight, AS-IS grading and honest condition language. If a hashboard only partly hashes, the listing says it only partly hashes. It is the reason the feedback is what it is.
• The heavy stuff is where the arithmetic actually bites, and most of it is not freight. Across 171 completed single-machine sales the median shipping charge was $50 — the same $50 on a $349 machine as on a $1,400 one, because the carrier is pricing the carton and not the invoice. Almost none of it needs a pallet: Bitmain's own published gross weights run 14.5–22 kg, well inside a parcel. What it costs to ship the heavy gear has the working.
• Industrial categories have a fee carve-out most sellers never find — and it probably isn't the one you're listing in. A few Business & Industrial categories (Heavy Equipment, commercial printing presses, food trucks) are charged 3% to $15,000 rather than the usual 13.6%: on a $985 sale, $49.95 against $134.36. My own industrial stock — FANUC pendants, Allen-Bradley PowerFlex drives, Ericsson RBS baseband units, Eltek DC power systems — sits in Industrial Automation & Motion Controls and gets no such discount. I found the carve-out reading eBay's fee page line by line for a guide here, and the reason I write it up as a trap rather than a tip is that the saving is only real if the item genuinely belongs in that category.

What I am not the right person to ask

An author page that only lists strengths is a sales page. These are the real edges of what I know, and where a page here will send you somewhere else:

• Apparel, footwear and fashion resale. Not my category, and my own method breaks there — air jordan 1, patagonia fleece and apple watch series 8 all returned zero repeated-title clusters at n≥5, because the same boxed unit isn't resold by many people. For that inventory, sellers who live in it will beat me.
• Cross-listing to Poshmark, Mercari, Depop or Facebook. I sell on eBay. My app exports files for other marketplaces and posts to none of them, and I have said in print — on my own product page — that Vendoo and List Perfectly are the better buy if that is your bottleneck.
• Tax. 1099-K thresholds, sales tax nexus, what you can sell before you owe anything — I am not an accountant, the numbers move every year, and a wrong answer costs you real money. This site deliberately publishes nothing on it.
• eBay outside the US. The app targets ebay.com, and my sold-comp data is US sales. Everything here about fees and pricing should be treated as US-specific.
• Support at scale. It is me. Bug reports on GitHub get tracked in public; email gets answered when I am not on the bench.

How I decide what to publish

One rule: a page ships only if it contains something you can't get from the other results on that search — a query against my own sold data with the query printed, a real unedited screenshot, or something that went wrong on this account. No invented statistics, no fake testimonials, no AI-generated image ever used as a listing photo. When a competitor is better at something, the page says so, and when my own software is wrong, the page says that too — the app's default eBay final value fee sat at 13.25% when the real rate has been 13.6% since February 2025, and I published that rather than quietly patching it.

If something here is wrong, tell me and I will fix the page. The contact details are real, and the phone number is the one on my eBay listings.