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If you're looking to invest only a few dollars (under 10M) Then a set of OSRS Gold For Sale Barrows armour and some nice peripherals (fury, though that's not necessarily the most effective) offers a fantastic value for your buck. There are, however, some excellent things you should get. I'm assuming that you haven't been around for a long time.
A rogue with a strange rapier. It is a powerful weapon for melee with just one hand which you obtain after dungeoneering a bit It requires at least 80 dunge to get it, with the help of the dunge rewards system. The most chaotic weapons are the most powerful in their class.
Bandos chestplate and tassets. The prices are varying, but they tend to be the first choice for those with cash. 12M for one piece and 12M for the second. They grant the power of prayer and strength.
I'm not an expert when it comes to Helms, but if going to be slaying, you should have the full Slayer helm to get its bonus features (likewise Salve amulet if it's relevant) and Verac's helm otherwise.
For boots, you'll probably prefer to stick with dragon. There are more comfortable boots, that are known as "ragefire" I'm sure however I'm not sure you want to Buy Old School RS Gold spend your money on these. For gloves, you can either borrow gloves from RFD or possibly an goliath glove from the dominion tower.
