Is it possible on a PayPal field to limit the number of times an item can be purchased?
For example,

Check all that apply
Hotel Key Card Sponsor $1,500 (limit 1 available)
Hotel Room Drop Sponsor $1,000 (limit 2 available)

I realize this may require separate fields but wanted to see if it was even possible first.

Dear Sue,

Thanks for getting to us!

We are kindly letting you know that it is possible to get using MySQL Mapping functionality.

Adding Select field you need to connect to that table using Select Option from Database . Please check
this link . Select the name/ option > Save.

Then go to Form Options > MySQL Mapping > Add Query > Select Delete > Connect. Here I am showing. Then select the same table and add the condition clicking on the Plus button.

In the attached file I am showing how you can add the condition and generate the query.

Thanks and have a great day!