I have wanted this integration for a very long time. We used to use the same method of pricing per common integer (/gram/ounce/etc), but the reporting was too ridiculous for us to maintain... Clover has a separate app that will parse a unique barcode for weight items and integrate with your POS. Last time I looked, it was an extra $10/$20 a month to use.
We've opted for a solution that works outside Square Software.
I'll create a unique set of digits based on the individual item from an inventory spreadsheet... All I really need is the wholesale price, the retail price, and a unit of measure for each item. I'll reserve 5 digits for each price point... If the wholesale price of an item is $5.50/lb. and the retail price is $10,99/lb. then the first 10 digits would be 0055001099. If the product is sold by the individual unit (each)... I'll add the number 11 to the beginning, and if it's sold by weight, I'll add the number 22 to the beginning. So that example would look like this: 220055001099
Put that number in your product's description field (I use it as an SKU... But that's a whole other story), and for items that are sold by weight, make sure to leave the price field blank, so that you enter a custom price when scanning the item's barcode. Now when you sell that product, you can import a sales report into your own spreadsheet that deconstructs that number by looking at the first 2 digits to determine if its sold by weight or not, then multiplying/dividing the appropriate values by the quantities sold. Until Square allows for a decimal in the quantity of an item sold, I really couldn't think of another way to do it.
