[Bob Andersen]

Thanks for the link to the ceramic safety caps. I keep screwing up and getting the plastic box type with very short leads

They don't seem to carry much in the way of 500v caps at Mouser but Digikey has a nice selection. 10uF @ 500v, 10000 Hrs @ 105°C Nichicon are $1.83: http://www.digikey.com/product-detail/en...ND/3664442 Only $1.44 qty 10+.

That being said, JustRadios has great prices on mica caps and some hard to find stuff like 1W and 2W resistors in the megaOhm range and higher voltage (1000V+) caps.