First visit to LCS, what to expect?

I want to visit a LCS and want to make sure I’m not committing any faux pas or have unreasonable expectations.

I want to add to my silver stack and not sure how much of a premium I should be expecting? ASE’s are my favorite but willing to expand.

I’d expect a little back and forth negotiation on higher ticket items but want to start small with an OZ or two of silver. Probably pay with cash.

Any advice would be great as it would be nice to begin to build a relationship with the local coin community.

Thanks.