The digital negative and printing technology is making exact copies of your photographic work. Limited editions are used as a solution for scarcity and pricing.
Instead of having an arbitrary number of prints in an edition, base editions on geographical location. Each print can be limited to a state or country, and part of the signature of the artist on the print will include the location it “belongs to.” This means that some locations will sell for higher prices as there might be more collectors there, and the signature will guarantee and be proof of the value of that specific print even if it later moved to another location or resold. The provenance of where it was originally sold will keep its value.
It might boost conversions in two ways: 1. Make people convert now because they don’t want to chance it. 2. If they come back, they might be more easily converted.
Tell them that they can buy the product today, or return tomorrow and get it cheaper (or get a bonus), but there is a risk. You only offer a limited number of copied, and if it runs out today, then anyone who waited for the next day will mot be able to buy it at all.