Additionally,i'd say get musician's/instrument insurance,over here its fairly reasonable and insures your instrument while out of the house and for other circumstances -check and make sure it covers what you're doing,of course.
Small pawn shops seem to die over here,at least in the South West of the UK, due to giant Ca$hconverter institutions taking over,yes, they're safer for they buyer,but, in my experience rip off the seller and put unreasonable prices on junky goods.
ie,Secondhand Squiers being sold for a few pounds less than current value and old Kay beaters for £150 plus. I personally hate these shops.
Accuracy,you say? hmm interesting concept..