If you don't want to read this whole thing - just skip to the bottom line.
Actually, just in my experience, I've found handgun prices in general to be one of the least inflationary over the past 15 years or so. I've got several old "Annual Handgun Prices" magazines from the late 80's and early 90's - and the prices aren't a lot different from todays prices. Actual asking prices on gun shelves bear that out too. There are of course the occasional "flavor of the day" pieces that hit the market that everyone has to have that are somewhat artifically inflated (name the latest ohh & ahh wonder gun that everyone just has to have).
One could hope that handguns would go the route of electronic calculators, computers and printers. But I don't think there have been any radical cost saving manufacturing techniques, increasing demand for lower price units or greatly increased manufacturing competition to foster such.
As to the question of decreased potential liability impacting insurance costs - don't count on any price relief there. Large corporations don't go out and by package insurance policies (like we do with auto, home owners, etc. personal lines). In insurance lingo, when the market is "soft", insurance companies sell higher limits of coverage cheaper. When the market is "harder", corporations whith the financial where with all assume more first dollar liability. You guessed it - the little guy running a mom & pop machine shop or a service business out of the back of a few pick up trucks gets screwed. But the big guys alter risk financing and operational practices.
In other words, when insurance is cheap - they buy it and forget about claims costs (let the insurance company worry about it). Which eventually causes insurance companies to raise prices (whole nuther discussion about combined ratios, loss triangles, reserve setting practices, investment income, etc.). Thus when insurance prices increase, corporations begin to manage loss potentials better (IE: improved safety programs, more dilligent claims management, greater quality control to reduce the likelyhood of product failures, etc.).
So in a way, high insurance prices and the threat of liability claims tends to create an environment where a higher quality product is produced. But since risk financing and loss prevention techniques vary per market conditions - we, the handgun consumer, see little fluctuation in retail unit pricing.
Bottom Line:
No - The price of guns will not be significantly impacted by minor liability relief and reduced insurance costs.