Frame realy is best served when using a various amount of bandwidth at various point of the day. you can set up a 64k line and have a 32k port or CIR. You can also pay for bursts, which most companies let you burst to a certain point for a certain amount of time at no extra charge. If you exceed that frequesntly then look at the next CIR or the next size circuit. If you are using bandwidth similar to that of a T-1 (1.5Mbs) then it's best to lease a T-1 as far as cost goes. If your telco can sell frame to you for no mileage costs just the port and access charge, then that might be cheaper for you as well. Check your prices from your telco, request a price quote for both the T-1 and fractional service as a point to point, and do the same for the frame relay to include CIR and port speed charges and the burst time allotments. Then you can decide based on functionality and price as to what will serve you best. If you go frame, the other end will also need a frame circuit as well, either as a host or tail. The 2 could be pricey and you would have to consider VPN as well.
Im a Telco guy, I can get you where you want to go, but I can't guarantee it will work when you get there!