Hey Neil, With paypal, you can only do a single trial (one period) followed by recurring that has a consistent price. for example $1 or $0 for 1 mos, followed by $67 a month. You could do a $1 for 1 mos, then $29 for 1 mos- which stops, and then they would need to come back and order the $67 a month program. you may get some people who try to game the system and keep signing up for the trial... You will definitely want to test to see which works best- please let me know the results! David