Service Product Image

I'm selling services through my site; https://geodata.works

I'm struggling w/ the best way to list those services that don't really have an image to display, specifically for the Products Page.  I had created a stand-in image for each product but it was looking pretty bad in the Products Page.  When I deleted the main product image it was still using the thumbnail (in the >Product>Options screen) and blowing the image up to a horribly pixelated size.

My less-than-ideal work around has been to create a separate 'Store' page where I have more control and added items as Product blocks.  I don't think you can not have a Product Page when selling through Squarespace so the best I could do was keep it as a Not Linked page.  People can still stumble upon it though;  https://www.geodata.works/gdw-products

How are others handling showing service based products?  Any suggestions how best to handle items w/ no images on the Products Page?

- Mike