Yeahhh, some of these parts get expensive, but I am not one just to get the cheapest part because it is the cheapest. I run my firearms pretty hard and I need to know that the part I get will last as long as possible. For example when getting a side mount. Everyone and their mamas slap velcro on the side and use esstac cards, but those cards are flimsy and need to be replaced and I just hate the sound of velcro, shells fall out and move around etc. That is why I opted to spend the money on the Airidus side saddle. Yes, it is expensive especially when I have to drop 50 bucks plus shipping for extras, but man I am happy to do so. That thing is a tank.
So, anyway, get what you think is best for you and don't let me or anyone else tell you what you have to have and what brand or company you have to get. Do your research and get what you can and make educated purchases.