I go to Oasis Supply almost weekly. You can order EVERYTHING online and take advantage of the discounts they give for online orders. You will plug in your payment/credit card information BUT you can make up a 16 digit number because they DO NOT run it immediately. It will "appear" as though you are being charged for shipping.
In the comments at the end of your order, put that you are picking up your order and tell them the day you are picking up or not that you want a call when it is ready. If you give a fake number, you'll have to give them your card and pay when you pick up. If you gave them your real credit card number, you can either tell them to run it before you get there or you can browse the little showroom to see if you want to add anything on and then pay when your order is complete. YOU WILL NOT be charged for shipping if you are a pick-up even though your online order form says you will be.
Also... They work with Pfeil & Holing. If you can't find something you want on their website, you can visit www.cakedeco.com
(Pfeil & Holing's site) and figure out what you want and in the comments section, add the name and item number. They'll order in from Pfeil and Holing for you.
You can also call Pfeil & Holing direct and ask them to ship you a catalog. Then you can just browse through, pick out what you need, write down the numbers, search oasis site by item numbers to fill your shopping cart, then add the additional items in the comment section.
You get discounts based on volume and HAVE to order through the website to get them. And you don't have to pay shipping. Works out great. Saves me a lot of money.