Shopkeepers are more relaxed and laid back unlike the ones in Marmaris and some touristic markets, Sarigerme is kind of Hussle Free.
There is no obligation to purchase a product when you enter a shop, and a drink has been offered; it is in Turkish Tradition to Serve and Host the Customer most pleasantly.
You can haggle if you believe that the item is not worth the price you have had in your mind. But, ones you agree to an amount it is rude not to purchase.
In the shops of Sarigerme you can find all kinds of Shoes, Clothes, Sunglasses, Boots, Caps, Jeans, at the lowest price, but excellent quality stuff for men, kids and women.
If you can not find what you are looking for in the sarigerme (unlikely), there are nearby towns such as Dalaman and Ortaca with more shops you might find it worth visiting if you are after big shopping.
Just be aware; EVERYTHING is fake. There is nothing original. Providing documentation for its being genuine is part of the fake game. This does not mean that the quality is less, especially on clothing and bags. However, when it comes to Jewellery and watches, raise your warning sign bar, as high as possible.