I’ve been spending a lot of time staring at TCGPlayer numbers lately, but it felt like we were missing a piece of the puzzle. While TCGPlayer is obviously the heavy hitter, there’s a lot of interesting movement happening on other platforms that we shouldn’t be ignoring. To help fill in those gaps, I finally got the Manapool integration live.

More data, same workflow

The big concern whenever I add a new source is whether it’s going to mess up the flow for everyone using the weekly JSONL dumps. Good news: your existing workflows won’t break. The original tables (sets, products, sales) still work the same — there are just a few new fields. You’ll see marketplace and sale_fingerprint on sales, and manapool_url on products. If you’re digging through the raw data, you’ll start seeing “manapool” popping up in the marketplace column. It’s a clean way to see which platforms are actually moving units and at what price points.

On top of that, the dumps now include two new tables:

• listings — seller listing snapshots with price, quantity, seller info, and change tracking (previous_price, previous_quantity, gap_hours)
• manapool_snapshots — periodic price and supply snapshots (low_price, market_price, available_quantity)

Seeing the full picture

Adding Manapool gives us a much broader look at the secondary market, especially for those high-velocity sets. We’ve been tracking sales since May 2025, and seeing how different marketplaces react to price spikes—or those sudden “race to the bottom” moments—is pretty eye-opening. Those scatter charts on the individual product pages are looking a lot fuller now, which makes spotting true anomalies a whole lot easier.

I’m really happy with how the dashboard is filling out. Whether you’re hunting for a deal or trying to time an exit on some old booster boxes, having these extra data points should give you a bit more confidence before you pull the trigger.

Talk soon,

The MTGsold Team