This takes a bit but is worth it, it will give you about a 15k profit and possibly more. Ok now get about 10k out of the bank and sail to karamja, go to the general store and check if there is any coocked lobsters if there isn't world hop and check. When they have about 50 in stock the price is 45gp per lobster. do this untill you have a full inventory, sail back to portsarim and deposit them in the draynor bank. I do this untill I have 100 and sell them at the varrock bank for 25k For about a 13k profit.