also created a page that scraps data from pricecharting and mercari compares my current listed prices on eBay and Mercari to see if my listings are -/+ from current market prices

same as above :

Agreed , eBay is being slowly passed up for Mercai sales on TCGs and Sports . I kow it has been asked alot but can we please atleast do a Beta test for it ? I would be more than willing to provide feedback on this and test ( given a form or questions or input )