I lived around the way from Mesa Boogie and GC Sunset as a kid... As an 8 year old, I was completely obsessed with Rock n Roll. I had just been given a copy of Appetite for Destruction by the same friend I tried to give Bon Jovi's 'New Jersey' tape to.
At this time, BC Rich's and pointy guitars ruled the strip... and the place looked nothing like it does now... every 4th shop was a guitar shop, or pawn shop that had guitars in the window.... Freedom Guitars, Waldo's, Mesa, Carvin, Peavey, etc... but once Appetite hit, it was all Les Paul's and ES style guitars (because, Izzy lol)... I remember being overwhelmed by the sounds on every corner, the crazy rock n rollers and punks, and while my parents were at work, I'd ride my beach cruiser (a Sears Kent cruiser) up and down the strip and Santa Monica Blvd... it was probably not as safe as I thought, but I didn't care at the time. I'd play sick and get to stay home, and then hit the strip with my bike and stare into the windows of all the stores, looking at the fretboards like a big piece of graph paper with the strings on top of the frets, thinking... "man, I'll never figure out how to play one of these!"
One day I inched up the courage to ride as far down as GC Sunset. I walked in an began looking at all the Les Pauls and guitars they had on the floor and walls. Every color (not blueberry burst though)... I was sitting there in a daze when a rep walked up to me. Teased hair, tattoos, he may as well had been in my favorite band, because I was scared to death. He asked if I wanted to check one out. I told him no, and that I didn't have any money (but of course he already knew that)... He grabbed a sunburst Lester off the wall and let me hold it. I gave it a few strums and laughed like crazy -- half embarrassed that I didn't know any songs, half excited as hell, and 100% grateful. He left me alone with it while he went to go talk to someone. I swear I felt like Slash for a few moments... and from then on it was on -- I had to get an electric guitar.
After he came back, I thanked him, and went back outside and grabbed my beach cruiser (still unlocked and sitting there in those days) and rode home listening to my Walkman and orange sponge headphones. Sorry for the long rant, but I think it was necessary as ever since then, I had a bond with GC and I never forgot that dude. Over the years, I probably purchased close to 30-40 instruments from them, some cheap and used, some expensive and rare. I realize not everyone has a great experience with GC, and mine haven't always been 100% clean -- there have been issues, but none they weren't willing to resolve, even to this day. For anyone buying used from them, sometimes it's a gamble on the turnout -- but 9 times out of 10, I have had great experiences and the instruments were in better shape than listed.
I do call the store; I do speak with a manager, and I always ask for more pics. I also love that they offer a 45 day return policy and that I have 3 GC's close to me here in Orange County. If I hate it or if there's something wrong, I email their CS team -- they're awesome. If it's unfixable or I feel like something went terribly wrong during shipping (each store is different -- different mgr, different operations team etc)... then I will simply take it in and get a refund, and if it was misrepresented or shipped incorrectly, I've never been liable for the shipping fees (which are really reasonable to boot --- $25 or so on a guitar, and not too much even when buying an 8x10 cab -- they really eat it sometimes for the sake of moving gear).
Are there online retailers I love? Yeah. Chicago Music Exchange all day. I love my team there -- Marc, David A, etc... but sometimes things will pop up at GC and I have no reservations when buying from them. I want to support brick and mortar. I have had crappy experiences elsewhere about big online retailers that others can't stop raving about. I've been assigned reps at other companies that you can tell, only care about the dollar at the end of the day. For me, it's like this no matter where you buy -- people are people -- and how you work with them both upfront and in resolving any issues, is 90% of the deal.
I'm not affiliated with GC, and have had some not so great experiences, but nothing they haven't fixed and the team at GC Brea is my favorite -- a great Manager at that store who has bent over backwards to make a long time customer happy (thanks Shane). Good luck gear heads!