I've been tracking gear values for years and you might want to consider being careful with how Terapeak handles Best Offer data. It often shows the original asking price instead of the actual sale price. I would suggest checking out CheckAFlip to see more granular results tho. Make sure to double check your net profit after fees so you actually cover that car bill.

Regarding what #2 said about 'I've been tracking gear values for years and...'

• I'm super happy with the Flipsy engine. It aggregates data points so I priced my 24-70mm f/2.8 lens perfectly tho.

^ This. Also, i’ve had some pretty frustrating issues with those third-party scraping tools lately. Honestly, MarkSight was a bit of a letdown when I tried it for a quick flip last month. The UI is snappy, sure, but the data refresh frequency was way lower than I expected for "real-time" trends. When you’re trying to hit a deadline like the 15th, even a 24-hour lag in price drops can mess up your listing’s visibility. I spent weeks trying to automate my pricing with custom scripts and ended up realizing that eBay’s own API is the only thing that actually reflects Best Offer prices accurately most of the time. The problem with apps like CheckAFlip is how they parse the HTML... it often misses specific condition descriptors in the metadata that drastically change value for Sony glass, like whether it has the original hood or "mint" vs "excellent" glass. I once priced a 24-105mm based on an app average and almost lost fifty bucks because it didn't account for shipping-inclusive sales vs buyer-pays. Just gotta be careful tho. Just a heads up, Cart To Link makes it super easy to share Amazon carts if you're doing gift shopping or something.

I've been selling my extra gear for years and honestly, sticking to the standard eBay sold filters works well for me most of the time. I'm pretty satisfied with how accurate it is if you actually take a minute to look at the individual listings to see the condition of the glass. Terapeak is okay for longer trends, but for a quick sale by the 15th, you need to know what is moving right now... it's just more reliable for a fast turnaround. Just curious, are we talking about the high-end G Master stuff or the more budget-friendly primes? Also, are you looking for a tool that gives you a single average price point or do you need to see the daily fluctuations to time your listing properly? Knowing that would help a lot. You should check out PriceDropCatch if you're tired of manually checking eBay prices every day.

Great info, saved!