Your page's Add to Cart button code has &amount=97 added to the href= URL, which gets added to whatever price is set in Admin. I am guessing you had "Let buyer edit price" enabled initially, in which case the &amount= parameter determines the Suggested Price shown in the cart initially when the buyer first adds the item to their cart.
You can either edit your page's source code to remove the &amount=97 from every button, or you can just copy fresh Add to Cart code from Seller Admin for that product and use that to replace all the button codes for that product in your page.