Hey RZA,
Not wanting to beat a dead horse, but there's a lot wrong with both of these headlines...
I agree with what John and Jeff have already said and I'd like to add something else into the mix.
1. Why use the word "frightfully"?
Is it really frightening to know that there are only a small amount was ever produced? ... hhmmm? Even if I was the target market I wouldn't think it would be frightening or frightful in any way.
2. In both headlines you're already hitting the call to action button before you even get a chance to build rapport with your reader.
This is like opening up your front door and a salesman asking, "would you like to buy this rare vacuum cleaner?" before you even had a chance to look at it or listen to the benefits of owning it (or getting to know whether the salesman is trustworthy).
The whole purpose of your headline is to get the reader into your copy, not to sell them the product.
There are instances where you could put the price tag or call to action in the headline, but then we're talking mini-ads (like classifieds or google ads).
Or perhaps even a drastic price reduction on a high-priced item your target market is fully aware of.
3. Are the memories of your childhood "Electrifying and Mesmerizing"?
Not mine... The only thing I can remember "electrifying" was when I stuck my finger in an open wall outlet once.
And I'm not sure what you mean by "mesmerizing". The word mesmerize comes from Franz Anton Mezmer (an 18th century physician who discovered and studied "animal magnetism" or "mesmerism"). It later developed into hypnotism.
I don't know about you, but thinking about my childhood doesn't really put me into a mesmerized or hypnotic state.
Bottom line...
Choose your words carefully whether it be in the headline or in the body copy. The words "frightfully, electrifying, and mesmerizing" can all be used with success, but just not in this circumstance.
My two cents... Take it or leave it.