Where do I buy boosters/starters?

See the W&N/RoseTatu links for sealed stuff, depending on your side of the planet.

For cheap singles, Rickstock in ebay has lots of older stuff cheap. Obviously, some stuffs not, but he runs lots of vamps from DS, FN, SE, SW, and sometimes other stuff for cheap.

Dont look to get Matthias, Arika, and Ezmerelda cheap, but you can buy stuff like Ranjan Rishi, Vittorio, Ingred Russo, Bindusara (who is like an errata away from not sucking), Devin Bisley, watenda, zoe, etc.

So if you need g1 or g2 stuff, from indy set stuff, cam, and sabbat, hes got decent prices.

Staples too, at least as much as other ebay stores have good prices. DtD, Freak Drive, Taste, Deflection, etc always run high, but governs, stealth, intercept, wake effects, 44 magnums, blood dolls, whatever are dexent priced.