what is a fair price to accept for BitCoins? I am new to the community and trying to accumulate some coins and a rep, etc.
That reads like you might be asking how much you would need to discount that from a fair market price due to your not already having a trading history. The problem is even if you were to sell it for 1 BTC and you were a scammer, that price is 1 BTC too high.
Offering to use an escrow will help cause your first transactions to go smoothly. The buyer sends coins to the escrow, you ship with tracking info, you get delivery confirmation and the buyer releases the coins to you.
You still could ship an empty box. That's a risk the buyer takes. The buyer could claim you shipped an empty box. That's a risk you take. Because some escrows have dispute arbitration, using them at least will help the party that can provide a decent defense to at last not lose the entire amount.
For instance, when the buyer receives a package in the mail, instead of opening it right away the sealed package is opened on camera and/or in front of witnesses. Or the package can be taken to the Post Office and opened there in front of their staff and cameras. The seller might take similar precautions -- a photo or even better, a video showing the items truly were on-hand and packaged.
This doesn't protect either side 100% but reduces significantly the risks. Such that the seller needn't discount the price when selling for bitcoins any less than the price the seller would take when the buyer pays with PayPal or other method.
You'll probably end up with a good offer for those Roku's.
Here's some info -- for both buyers and sellers: