Ultimate is the cheapest option currently available if you don't have anything at all to start with, and is $6 off if you use the HOLIDAY-2007 coupon. If you have TGN tokens, any combination of GC2 and expansions still comes out to 8 tokens. Ultimate is not available via tokens since individual puirchases with tokens are already cheaper ($56 for all three at $7 per token) than Ultimate's standard price.

Paypal and the major US credit/debit cards are accepeted, and if you're willing to do a mail order, you could even use a cheque (but you'll want to contact sales@stardock.com for further info about that if you need it). Do note that Paypal can't be used with coupons, though.

For that you'd need to contact sales@stardock.com to see. I'm sure something can be worked out one way or another.