Try your local hardware store. You can also try sherwin-williams which is my first choice. Lowe's and Home Depot also have a lot of pallets to choose from and the employee's can help you some colors out.
There are many companies that sell wholesale pallets available. A good example would be OneWay Solutions, who sell various different sorts of pallets. OneWay Solutions ships worldwide.
There are many places to buy spill containment pallets. One of those websites would be www.industrialsafetycabinets.com where you can find low-price spill containment pallets.
Pallets can be found for sale online usually. Prices range from $20 to over $100. The best way to find pallets offline would be to go to a store that has big shipments like a hardware store.
It doesn't seem that many places in Honolulu sell shipping pallets. The locals recommend using the Honolulu Craigslist or Freecycle. You may even find businesses willing to give them away.
Chep is a manufacturer that makes and sells pallets. They have wooden pallets, plastic pallets, display pallets, automotive pallets, and aviation pallets.
There are various online stores that sell plastic pallets. Some of the best include the following:- Globalindustrial.com, Nelsoncompany.com and usplastic.com
The first place that I would check would be your local kijiji website. Another great place is craigslist. You should be able to find many free wooden pallets.
You can gain more information about wooden pallets at the wikipedia 'pallet' page which gives you information about all the different pallet features.
If you would like used pallets, you could always ask local stores for some. If that is of no help, you could probably buy some from a shipping company.
There certainly are places that offer plastic pallets. You can check out the best one at plasticpallets.com. YOu can also purchase used ones on Kijiji.
Searching online is one of the many ways to search for pallets. Special orders for specific sizes and quantities may also be required for a companies' needs.
Wood pallets can commonly be found at hardware stores, such as Home Depot or Lowe's. If there is a good amount of construction around, they sometimes can be asked if they have some to spare.