if you want seafood, then be prepared to spend a bit of money because its not cheap here. Marisco center near monumento is a good place to eat, but it will cost you. The shrimps dishes in DR are basically made form frozen american precooked shrimps from a bag, the fish is from dominican republic. You can eat in ahibar (great steak with mushroom sauce). You can eat buffet in hotel gran almirante for 275 pesos, all you can eat in certain days of the week. call there to find out what day they serve what food.
late night, you can eat in carrito de marchena, they have good mondongo and sandwiches there.
Excellent sandwich place = campana on juan pablo duarte.
For free places to visit, go to monumento in late afternoon to get some air and have a nice view of santiago city. For a small fee, you can go to centro leon and spend the whole afternoon there and the cafeteria serves good sandwiches for reasonable price.
For entertainment: go to ahibar in monumento area, then head over to kartuja, if you are young, go to dolce. Note, these places are good from friday till sunday. Weekdays, santiago looks more like deserted streets of baghdad.
leather bags shoes???????????? I assume you are a women. I will leave this for women to decide where is a good place to shop. You want cheap items, go to calle del sol. Its sort of like your canal street.
have fun.
AZB