I had stretched to a 4g about 2 or 3 days before I discovered Gorilla Glass, but I made the mistakes of a) stretching waaay too quickly, and b) using plastic jewelry. My earlobe actually had open wounds in it and bled every time I took the plug out, so I was in -DIRE- need of some new jewelry. I wanted something glass, because I knew it was a very neutral material, wasn't too expensive, came in a variety of colors and looked cool.
I hopped on Modified Mind in search of some non-pricey glass pieces, and came upon Gorilla Glass. A single solid glass plug was only $8, so I decided to go for it. Shipping was $4, and with 8.25% tax, for the one plug my total was only $12.66. Unfortunately, their entire checkout process is manual, leaving it open for errors... so I double-checked my math. Also, they don't accept credit cards directly, so I used PayPal. I had placed my order on a Saturday, but never received a confirmation e-mail (mix up with my e-mail address being de-activated, long story) until I sent them an e-mail asking if they'd received my payment on Monday. I received a reply Tuesday that said they had received it, and it would be shipped that day.
Since I only paid $4 for USPS priority mail, shipping wasn't the fastest thing ever, but not too slow (maybe this was because they're located in Santa Cruz, about a 3 hour drive north of where I live). I received my jewelry on Saturday, so the entire process between ordering and shipping was about a week. Not bad! The piece itself was essentially flawless. Unfortunately, although it is a single-flared plug, they didn't send any o-rings with it. Luckily I had a 6g clear silicone o-ring that worked.
Overall, my experience with Gorilla Glass was a very positive one. Customer service was prompt, shipping was fast and quality was great! I'd definitely recommend them to anyone looking for quality and well-priced glass body jewelry.