I’ve been hanging on to the catalog from Maplin P. Jones and Associates for quite while, however no time is a bad time for a post about cheap parts from a US vendor in Florida. It is usually the case that a single supplier does not have all the best deals on everything. Fortunately for us their switches are very reasonably priced if purchased in quantities of 100 for $32 US plus $8 shipping. Soldering stations are not bad either only $15 for temp controlled. For those who are just starting in DIY electronics this OP-Amp kit is highly recommended, simply replace the pot with a photo resistor and you have an instant optical theremin system with sine, square, and triangle waves for only $4.95 on a PCB that is ready to mount in a case of your choice.