Your selling a product that is a physical thing. How do you get paid? There are a number of ways to get paid for product before you ship it.
One way is to get a bank account with a Merchant Account so that you can take and process credit card orders. Generally with most banks they have interfaces that allow customers through a secure server to make a purchase. There are some drawbacks to this method. One is that the banks charge fees for this service and with internet based businesses they tend to charge more due to the credit card fraud that occurs on a regular basis. Some of these fees include monthly account fees, fees on the purchase, fees on deposits, it can zap a start up business with lots of expenses while your waiting for your first sale.
The other is to use one of the many others out there that are offering this kind of service. You will notice a link of interest which takes you to one of the most used and trusted payment collection methods Pay Pal. Originally developed so that they could harvest money from E-bay sales they have expanded to cover almost any form of payment and credit card on the face of the earth. They do charge a fee, but only when money is transferred into your account, and transfers out to your bank account are free and secure. Pay Pal for all intensive purposes is a bank and needs to use the types of encryption that banks use to process transactions. This makes payments secure without the need for a secure server or interface. Pay Pal also offers a variety of other services including dispute resolution between a buyer and a seller. Keeping accurate shipping records is key to dispute resolution with Pay Pal. The other thing that is nice about Pay Pal is that they are well known and well trusted by people so convincing them that their information is secure is simple to do.
You can also take checks, money orders and direct payments. These methods for the net are not generally used except for those that fear putting their credit card info on the net. The net functions for the most part on IMPULSE sales. People are interested and they buy, instant payment with a credit card is the norm. Just be sure that the checks clear before you ship the product that is ordered. If the check is drawn on a US bank that is generally 3-5 days so a simple page that explains payment options and that checks are held till cleared is a simple task.
Those are the basic ways of getting paid for your hard goods.
Sparky