I too am sorry for your lost. It is difficult to find people willing to pay what the quilts are worth. You can try eBay. You can put a model of a sewing machine in such as Bernina 1530 and on the left side, one of the options is Item Sold. Click that it will give you the history of what prices that model sold for. Quilts stores and quilt guilds are a good place to start. Welcome to the board.