You've asked this same question three times with different titles in two different forums.

Please familiarise yourself with this rule
http://www.flyertalk.com/help/rules.php#q64

"Post Your Thread to Just One Forum - link to this guideline
Don't post the same thread more than once. Our members read many forums, and weeding through the same message in multiple forums can be frustrating. Duplicate threads will be deleted, combined or locked."

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Whilst we welcome newcomers to this forum, most of us prefer to help those who have already taken some steps to help themselves.

If someone has the spare time and inclination they may possibly be prepared to root around for you and look at what's available on your dates. Nevertheless, it is time consuming, and not everyone is willing to do this.

You will find that this and other forums are more helpful if you tell us what you've found out already and ask for an opinion on that. This way you tap into people's expertise (they'll know if it's a good price or not) without asking for too much of their time. It's also quite likely that your efforts will spur someone to research a little on your behalf if they think they are aiding you rather than spoonfeeding you.

I'm sure as teachers you'll understand all this well.