Grenadier Productions are reporting that their online store is still offline.
From their website:
Sorry for the delay but a combination of factors has kept me from getting the Grenadier Productions webstore up as quickly as I would like. Rest assured that the store has not gone away and that both Grenadier! Miniatures and the line of Grenadier Productions books are still active and for sale. I will get the store back up as soon as possible but it might be mid-June before the store is posted again.
If you would like to order some products, feel free to send me an email and we can arrange something directly.