I have been making bits of jewellery as a hobby for a while and now I have decided to start selling some of it on Folksy. I an however now making a few bits over the 7.78g limit and therefore need to do the whole hallmarking thing. Does anyone have any suggestions on which of the 4 assay offices is best to uses if you are small trader/hobbyist? Although they all claim to have simple pricing schemes you get odd charges on some of their price sheets like for having things in individual bags. I have also heard people say they only use the laser engraving so there is no need for a punch to be cut but is this true / a good idea?

As I am in Kent the london goldsmiths hall would appear the most logical but then I am worried that is probably the busiest and so least interested in the little guy (well positively microscopic)

Any guidance would be much appreciated.