How much is my painting worth?

I bought two beautifully framed paintings or serigraphs by S. Sam Park. One is named Bellagio with signature and 175/505 in the bottom right hand corner and the other is Amalfi with signature and 345/505.

I am not savvy in art but saw them in a window at a flea market mall and fell in love with them. Can someone tell me what they may be worth?

The only reliable way to find out what they are worth is to take them to a reputable art appraiser. But they are not cheap. BTW, they sound like prints, not paintings, because normally when you have two numbers like that with a slash between them, it means that that print is the first number out of a series. The second number is the total amount of prints in the series.