in a city that for centuries has thrived almost exclusively on tourism, remember this: Where you buy cheap, you get cheap. There are few bargains to be had; the nonproduce part of the Rialto Market is as good as it gets, where you'll find cheap T-shirts, glow-in-the-dark plastic gondolas, and tawdry glass trinkets. Venetians, centuries-old merchants, aren't known for bargaining. You'll stand a better chance of getting a bargain if you pay in cash or buy more than one item.