The l298 dual motor driver is available for free sampling here
Go to Orderable products >> ST pricing and free samples >> and order, you may have to make an account.
I think i am gonna get it it said it will be deliverd WOW 4A.
Just so you would know: If you only get the chip you still need to make a PCB for it. You can not use a standard strip/perfboard because the L298 uses a non standard pin spacing.
The IC does come with wierd spacings, however, I've been able to bend the pins a bit to fit over breadboard trenches and perf/veroboard.
-that the chips are not available for sampling currently.