According to the listings here and here and here Dash stands at 5 foot 9 inches tall and is made of PVC.
The price on the site says that one of these could be yours for as low as $99 a piece if you order in bulk, the factory is prepared to churn out as many as 3500 ponies a month if you need them to.
It does appear to be one solid piece, much to the dismay of 80% of our readers, but the listing says that it IS good for parties, advertisments, or outdoor events. Seen here is a full-grown Chinese man standing next to a fully-inflated Dash doll.
Just imagine what a great pool-toy it would make.
The company producing these also says it can do custom orders, so making other characters, or your OC IS a possibility, if you’re willing to wire money directly to mainland China.
If we do not see these beginning to show up at conventions we will be disappointed in all of you.”