To be honest there’s loads of decent small mods you could choose from. Try to avoid eBay and to be honest amazon isn’t the best place for gear. Check through the link for the retailers and you’ll get original items at decent prices.
If you see something you like the look of let us know and we can tell you if it’s decent or not.
It is worth spending a little more to get quality items that will work properly and last you. When you’re more experienced you can go bargain hunting as you’ll know what’s good and what’s not.