Surround sound bluetooth speakers?

I'm looking for some bluetooth speakers that are able to connect to my iPhone. The problem is obviously I can only connect to one bluetooth system. I'd like to be able to connect to a device that has, say, three different speakers in different parts of the room for more of a surround sound. The only thing I know of is the sonos system and frankly that's just too expensive for me. Is there any other system that's relatively cheap with decent sound quality?

I've been using a really inexpensive blue-tooth receiver that can be hooked up to your home stereo system (so that you can have surround sound and use your current sound system). The best part is that it's under 30 dollars
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Surround sound bluetooth speakers - 1