If you are reading this guide, you obviously want to beat Punchbag Bob and get that spiffy trophy on your lookup! Well here is a guide to the sort of weapons that you should purchase and how much NP you will probably need.
First of all, make sure you have at least ,6000 neopoints. Go to the shop wizard and type in ‘Scarab Ring’. Then buy the cheapest. Then go back and buy another one. The most you should have spent is 6,000np.
Another way of beating him is to purchase two ‘Lightning Scrolls’. For one of these, the most you should be paying is 5,000 neopoints so that is 10,000 neopoints in all.