I used both USA Liberty Arms and Liberty Firearms Institute for transfers and I have purchased from both of them over the years. However, the last time I used LFI they had raised the total transfer price to $50. Screw that! They are also more expensive on their products than other stores. They do have a professional staff and some have been there for many years.
USA does have a high employee turnover and some of the younger ones just can’t shut up. One of the idiots nearly queered a deal I had worked out. Generally I have found USA to be less expensive than LFI on most items.

My $0.02