E_J_L

Thanks so much. Yes, it works now, with 'grid' layout instead of 'wall'. 

I completely agree - I NEED customizable item-specific shipping rates. I'm scouring this forum and online message boards to see if anyone has found a work-around for this!

I am just finishing my website and this is about the only thing I don't like about square space. I am now deciding between two or so shipping apps.

Face it, Squarespace for some odd reason doesn't really care about the ecommerce side....so many limitations and workarounds you have to do.  Perhaps they don't have the capability to invest....losing market share to shopify??  After 5 years, I'm almost ready to do the switch.  Postage is a huge problem, more than ever, and no flexibility available on the build.

This has been a problem for me for close to 10 years.  It would take nothing to add in the "pricing and variants" tab a little box to specify the item has a custom shipping cost and then to specify that cost.  A first year programmer could add this in 5 minutes.  The Squarespace community has been complaining about this for years, clearly Squarespace doesn't care.

Ughhh! So frustrating because I just added a bunch of Printful items to my shop and I ended up putting all the shipping weights/dimensions in manually so it would calculate the right amount of shipping...but since I also offer local pick up for customers near me, it puts that option on every order and if someone selects that when ordering any of the Printful print-on-demand items, it won't charge them shipping OR send the order to Printful to print it. What a pain in the ass! Squarespace, get it together and offer per-item shipping options NOW!

I finally managed to change the 'back to shop' link on the product page using the code below. It also allows you to change the back link for products in one product collection only. 
The code was provided by @tuanphan on another thread. Thanks!