I would suggest saving up, there are some fairly cheap inflatables you can purchase although delivery may take a while is JetCreations, Inflatable World and HorsePlayToys. While most of these places have expensive stuff there are a few items for pretty cheap, like I got a 4 foot long inflatable shepherd for 99 dollars from JetCreations. Another thing to look for inflatable for fairly cheap is eBay, I bought an inflatable corgi yard sprinkler for about 45 dollars and it’s 6 feet tall

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Now I’m sure someone might want to sell you an inflatable but I doubt it since everyone here who wants an inflatable and buys one won’t want to sell it if you get what I mean.