The cost for you to Re-Flash a Superchip will be more than what it costs for a decent map on weber

But yes the money you have paid for the FRST is nothing, but not everyone has that luck when finding the management system.

As for the weber sensors you are correct as in they will cost a little more.

For example:-

TPS FRST £10 Weber £30
CPS FRST £10 Weber £15
ISCV £30 Weber £40

Again you can see that the difference is cost is not that much when comparing what you get for your money.

Weber sensors are used by the best system's all over the world like Pectel for example.

Hope this helps.

Regards
Jano