There are several places that offer budget friendly law enforcement rings and jewelry. If you do an Internet search for "affordable law enforcement rings" you will find several suitable sites to purchase your ring or jewelry from.
Many of these sites even allow you to customize your law enforcement rings to your liking. Prices on law enforcement rings on more affordable sites typically range from the low $200 mark to more than $500. It all depends on the type of metal you choose and any engraving you wish to be done.