For $100, you're not going to get anything "quality", unless you go with faux clays. Boring looking but they work great. They are super-cheap.
If you can double your budget you may be able to get some custom ceramics from various retailers, such as the CT sponsor palmimports.com Joe is tooling up to accept custom ceramic orders as of Sept. 1st.
You could also go the used route but most "real" chips are still going to go for $0.50 each.
There's also the t-mold chip from holdempokerchips.com (another sponsor) which is a blank clay chip made by bluechip. Those are still .55 each.
ASM makes great chips over at pokerchips.com and as a CT member you may get some consideration but again, they are expensive.
I honestly tell everyone to just buy faux clay to tide themselves over until they get fully bitten by the chip bug and are willing to spend AT LEAST $0.50 a chip. I owned faux clay and some here espouse them above all chips because of the price to value ratio. Yes they are boring but they handle and stack great... those are my personal "must have's" when it comes to chips. Looks are secondary.
There's a whole different route if you can "bonus ho" the poker sites. Check out
pokersourceonline.com and ecasinodeals.com. Basically, you sign up through thier affiliate program, clear a bonus at an online site and earn comps... some of which are nevadajack.net chipsets. I owned a set of the American Beauty chips for a year or so and they were perfectly functional attractive chips.
Trust me on not buying the cheap plastic chips though... Yes they serve as markers for money but they just aren't worth the cost, IMO.
Oh yeah.... GET SAMPLES for any moderately expensive chip you are considering. Go ahead and get 10 or so so you can shuffle, cut and stack them.