Oreo Ice Cream cake and budget version

Mollie has her 14Th birthday coming up and she asked me to make this dessert. There are two ways to make it, the regular way and the budget way.
Regular
1 package oreo's crushed
1/2 c. melted butter or margarine
mix these together and press into the bottom of a 9X13 pan
1/2 gallon ice cream (the rectangle kind works good)
slice ice cream and place over cookies.
Freeze
when ready to serve melt some of that expensive fudge sauce and drizzle over each piece.
Yum Yum

My version
1 package off brand sandwich cookies crushed
1/2 c. melted butter or margarine
mix together and press into the bottom of a 9X13 pan
1/2 gallon ice cream, slice ice cream and place over cookies.
freeze
when ready to serve, cut into pieces and place on plates, melt some inexpensive fudge frosting and drizzle over each piece.
Using my version you should save at least $3.00.