The usual first step is to decide what you want to do with your boat -casual and fun sailing or perhaps racing against other boats ?
there are a TON of boats in that size range , you can use the search feature on this or other sites to find specific threads about a boat
you might be interested in .
If racing is your bag , I always send people to the American Model Yachting Association ( AMYA ) website at www.theamya.org
there you will find info/comparisons on all the supported racing classes - PLUS a club locator - look up your state and find clubs in
your area . go visit them , ask questions , see the boats "in person" . chances are someone will let you take a test sail .
Then you need to decide if you want to build , buy "ready to sail" , or used . each of those choices has pluses and minuses .
Again , what you spend kinda depends on what you want to do - for a couple hundred you can get many different types of ready to
sail boats , and these days there are Asian "generic" 2.4 ghz radios for like $60. And of course , the other end of the spectrum are
the carbon fiber one meter class boats for $1500. and $ 500. radios . so .
Don't worry , you will get plenty of GOOD advice here - these guys really know their stuff , and are very helpful.
good luck !