This one is not for the faint of heart...hehe...
Instead of basing it on a minimum dollar amount, I was thinking of breaking it down by numbers + going rate. For example, we would each get 4 pets worth approx $1-5 apiece, 4 pets worth approx $6-10 apiece, and 2 pets worth approx $10+. This would ensure that one of us didn't end up getting just the more common, lower priced LPS on our wantlists. Each would submit a wantlist broken into the 3 categories. It would take some work to research the going rates (reviewing completed ebay listings is a good check) and it will end up getting a bit pricey, so this private swap is ideally for someone who is OK with spending a few more bucks than normal.
Ideally, each partner would submit 10-20 wants per category to give a good selection, and both parties would be expected to get pets off the wantlists only.
I was thinking 4-6 weeks for shopping.
If anyone is interested, let me know!