Try recording yourself reading your sales page out loud and then play it back. Did it bore the piss out of you? If it did, guess what... it bored the piss out of your potential customers too!
Your sales pages should engage the reader. They should be stumbling over the words because they can't wait to see what you have written next.
This doesn't mean that you have to be a William Shakespear. Some of the best sales pages are written in a conversational style. Record yourself saying your pitch out loud. If it's boring, do it over. Do it over and over again until you think that this is something worth listening to. Once you are there, transcribe it to text.
Enthusiasm is rarely boring, but boredom rarely sells. Be enthusiastic and make more sales.