Courtesy of Altomic aliexpress has it for $1.85 USD shipped.
Only mods can change the store of a deal apparently.
Not a bad price if its compatible with your garage etc.
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from previous experience Zapals will probably take at least 2-3 weeks to put it in the mail, so you probably wont see it until next month .
Model ZY1-4
Type Wireless RF Transmitter
Operating Voltage DC12V
Operating Current 9-12mA
Transmitting Distance 80m (open space)
Frequency Deviation ± 0.2MHz
Encoding Chip PT2260
Operating Frequency 433 MHz
Shock Resistance 4.7M
Button 4
Modulation ASK
Quiescent Current 0uA
Transmitting Power 10-15mw
Weight 30g
Product Size 5.7 x 3.1 x 1.2cm
Package Size 13 x 8 x 3 cm
Cheaper via eBay sellers. AUD$2.59 to AUD$2.63 delivered