first paragraph...
This irradiates price manipulation
ummm no
the security of bitcoin has nothing to do with price(FIAT/legal tender value of a coin) manipulation, but irradicates balance / personal holdings (amount of bitcoin) manipulation
second paragraph
You can be in full control by selling the bitcoins back to legal tender using services like Bitpay and Coinbase, or hold onto them for investment purposes. Because its relatively new (5 years old), Bitcoins value is pretty volatile. However, using services like Bitpay and Coinbase, you can promptly convert your Bitcoin revenue into local currency if you wish.
firstly i replaced dollars as i was thinking of making the letter more international so it can be usedin the UK or urope without editing. i though using FIAt was a weird word so chose legal tender.. bt now reading it back, maybe either go with dollar or use the words national currency. as the words 'legal tender' may make people think that bitcoins are not 'legal' and open up a floodgate of questioning about if bitcoin is illegal to use. (laymans thinking)
my previous post was saying basically, you can either do it manually yourself using localbitcoins and sell back to dollar/national currency when you like, or just hoard.... or you can automate it using coinbase/bitpay and take the manual effort and price volitility out of the equation for a subscription/small fee.
but it seems like your trying to push them the coinbase/bitpay route without showing all options.. which is kind of leading the customer down a narrow path.
third paragraph
Youll save a lot of money (with no merchant fees)
bitpay/coinbase do have fee's though. so becareful not to promise things that are untrue