you have forgotten to factor in shipping & handling,before your calculation and because paypal would not protect the interest of sellers insurance and delivery confirmation cost.
Yes, its a people problem which paypal would not help, doesn't seem like much a problem until you realise its the sellers who are paying them, well, at least half.
I didn't forget. We are talking about PayPal and per PayPal rules it violates their user agreement to expressly charge a buyer "PayPal fees" when selling an item. I thought you might need some help better understanding how to build those in to your asking price since you said it was hard to do. I work with markups, margins and percentages every day so I don't think twice about it really. You are, in as much as it relates to PayPal, free to sell your item for the $207.62
plus S&H, Insurance, or whatever other expenses you want to pass on to your customer and figure out those charges once you know where you buyer lives, or what kind of service you agree on.
As for the people problem, yes PP does not remove all risk. From the view of the seller if a buyer sends me a USPS money order and I cash it before I ship then I have removed my risk, but the buyer assumed a greater risk than if we had used PP. Personally I would rather share the risk a little and gain the exposure to a much larger buying pool. I can always take a money order from someone who will not use PayPal.
Since the main objection to PP seems to be the risk to the seller, here is a little something I learned about personal checks (if anyone thinks they are "safer") while researching my options when starting an online business. A check never really "clears" the bank. You might wait 10 days, or two weeks to make sure a check doesn't "bounce", but my bank told me that the holder of the account a check is written on has at least a year, maybe more to challenge the validity of a check. So, if some kid takes a check out of the bottom of daddy's box of checks to pay you, and it takes daddy six months to discover that a check was presented for payment that he didn't write, they can come back on you for the funds. IF, however Jr. steals daddy's credit card and pays you via daddy's PayPal account, and PP tells you you are OK to ship and eligible for seller protection, as long as you can prove the item was delivered to the correct address you will keep your money. Seller protection has saved me from this scenario 4-5 times in the last 5 years.
This is because the kid paid PP and not me. PP basically paid me to ship something for them, and I did.