Read everything very carefully. Here is one example.
3 Day Fly to Vegas on a Dime
Inclusive Rountrip Airfare and Hotel
Current high bid $129 a person closing in 25 minutes.
Wow sounds too good to be true. Guess what... it is!
Read a little bit down, sounds good but yanno I want to stay at Ballys, add $32 per person per night. Some more but still not bad.
But wait, whats this, you live in NYC and this rate is only good for flights out of Los Angeles. Add $209 per person for flights out of Nyc.
Auction closes at $189 per person.
Total
$189 x 2 Bid = $378
$32 x 2 hotel upgrade = $64
$209 x 2 flight out of nyc = $418
---------------------------------
$860 Total
Not bad until a couple of weeks later you are browsing your local wholesale club and find out they have a better package for $50 cheaper.