Building or buying an IVR / step down voltage buck converter for the instruments

I won't be buying an RTE...$60 USD + $55 USD shipping to Canada = $172 Cdn!
Wow i just looked i payed 35 bucks plus 12 bucks shipping . A lie to me is a lie from me but i was told by a radio shack owner that all the small electronic parts we used to be able to buy are now sent , sold to Russia , North Korea and Ukrine .