From Blockbuster.ca:
Movie and game rentals are due back at the date and time stated on the transaction receipt. There is no additional rental charge if a member keeps a rental item beyond the pre-paid rental period. However, if a member chooses to keep a rental item for more than a week after the end of the rental period, BLOCKBUSTER will automatically convert the rental to a sale on the eighth (8th) day after the end of the rental period. BLOCKBUSTER will post to the membership account and/or credit card the selling price for the item in effect at the time of the rental. If the member returns the item within 30 days of the sale date, BLOCKBUSTER will credit back to the membership account and/or credit card the amount previously charged. The member will be charged a one-time restocking fee of $1.75 per unit per transaction plus applicable taxes. These rental terms are subject to change without notice at any time. Available at all BLOCKBUSTER Canada stores. See store for complete terms and conditions. Membership rules apply for rental. BLOCKBUSTER name, design and related marks are trademarks of Blockbuster Inc. ©2006 Blockbuster Inc. All rights reserved.
Just take back the two games and they should adjust your account. You should only owe $1.75X2.....
It states within 30 days of the sales date, which is 8 days past the end of the rental period. So you can have the games for whatever the rental period plus 38 days and still owe only $3.50...
Burt