Hi, I ordered my Save the Date cards from them and also the inserts for my invitations.
You can't buy 1 or 2 of a design as that's not how Vistaprint works, but you can often get 10 for free when they have their offers on (and you just pay for the postage).
A couple of tips for Vistaprint are:
1. Sign up to their newsletter as you'll receive offers all the time which come in very handy.
2. If the item you want isn't on offer, add it to your basket and go to checkout but stop before payment. Leave the site and within a week, you'll have an email in your inbox offering you your items for free (and just pay the postage).
3. Always choose the 'slow' delivery option. It says up to 21 days or something, but every time I've ordered using it (which is about 4 or 5 now), my items have arrived within a week.
They're a great company, however the only thing I would say is, don't ever sign up to their 'VIP' offer as this has caused a few problems in the past with Vistaprint taking out small amounts of money from your account. I think you have to give them your bank details to be a VIP member, so just don't do this and you'll be fine

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