Mark,
I had a local locksmith rekey some odd door handles I had, only cost a few $$. I'd be very surprised if Wilkinson is selling ignitions switches for $65. If it's a new tumber he sells then you've done the hard part simply removing the old one. A good old school locksmith will have boxes of various tumblers. They get worn over the years and then bend at the most inopportune moment.
I recall driving home from Arizona with th GT5 and the key actually breaking off in a Las Vegas gas station. I was lucky to be able to insert the broken half carefully enough that I got it started, but it's a couple gas fills from Vegas to Reno. I was on tender hooks every time I had to stop the engine to refill.
Once cleaned the recommended lubrication for locks is graphite powder.
Good luck,
Julian
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