I'm assuming that you are new to the sport. If not I apologize, but you'll need to know some things before you buy arrows to practice for accuracy.
The type of bow you'll be shooting will determine which material the arrow can be made from. If you'll be shooting a compound or Xbow, wood won't do. I've seen wood arrows explode coming off of compounds. You'll need to shoot aluminum or carbon, which are more consistent and strong from shaft to shaft and will fly more consistently as well. you'll need to know your draw with the bow you'll be shooting. The arrow should be 1" longer than your draw to the back or far side of the bow when you're holding it, for safety reasons.
If you'll be shooting a recurve or longbow, you'll need to know the weight of the bow at your draw length. Most wood bows have an AMO weight at 28" of draw. For instance, if the bow reads 50# @28" and you draw 27", the bow will actually weigh 47-48# at your draw length. If you draw the bow 29", it will weigh 53# or so at your draw length. The arrow needs to be properly spined to the weight of the bow, so that it will bend around the bow (archers paradox) when released and come off of the bow straight. You'll need feather fletching when shooting off of the shelf of a recurve or longbow and plastic vanes will be fine for the wheel bows.
Cheap isn't something I see anymore with most arrow fletchers or proshops. I've seen arrows sell for anywhere from 40.00 a dozen complete for cheap woodies to 200.00+++ for primo woods and carbons.
If you end up finding a proshop in your area and are shooting a recurve or longbow, don't let them get into the Easton charts to choose an arrow for you. Easton is notorious for suggesting arrows that are way overspined for the wooden bows. Subtract about 10# from the weight part of the chart and you might be close.
Just keep in mind that if you shoot a wood bow like a recurve or longbow, most online dealers and proshops know absolutely nothing about them, because they cater to the trendy and ever changing compound market. If you'd like to learn something about traditional archery and it's equipment, go to sites like
The Leatherwall. They are always willing to help with any question you might have. There are also sites available for compound shooters for those with all the tech questions they need answered.
Again, I apologize if my assumption that you are new to the sport is in error. Otherwise, I hope my ramblings make a little sense and help you some.