These trays aren't cheap

You know those waxed trays that hold a dozen of our geraniums? The last time we bought them they were just under a dollar each, that was 4 years ago (that would be the empty tray, with no flowers ;-) ). The next time we buy them, they will be about $1.50 per tray (this doesn't include handling or assembling them, etc.) We have always encouraged our customers to return the trays, re-use them, or use their own boxes. Lots of our customers do just that, but most of them don't. Last year we gave a discount off the price of the flowers if you used your own trays, and kind of had a deposit thing going when people brought them back. It was too complicated, so this year we're trying something different.

The price of our flowers is going to be $38.00 per dozen, including all the taxes.
Should we:
1) Charge $38.00 for each dozen, and then charge $2.00 for each of our trays? (customers could use their own trays, and wouldn't have to use ours)
or
2) Charge $40.00 for each dozen, with the tray included in the price?

What do you think? Vote on our poll.