Lemon and Orange have some fairly inexpensive compatible RXs. You'll have to research this a bit more because these are not parts I use so my knowledge is only from reading around but this...
http://www.lemon-rx.com/shop/index.php?route=product/product&product_id=109
should work. I haven't used Lemon but people claim they are good. Be careful when wiring up the satellite because it uses 3.3v and may be damaged if you give it 5v. Its likely you will have to do some soldering to get this hooked up. The Naze32 rev 6 has special SpekSat pads for this that supply the 3.3v.
However if you have a rev6 naze32 board you will not be able to bind it via the NAZE32. You could with the rev5. There may been a hack or fix for this since I last looked but if not then you will need a main RX to bind the satellite to your TX before you can use it as a standalone RX. Lemon sells a package which should allow you to do this...
http://www.lemon-rx.com/shop/index.php?route=product/product&path=72&product_id=121
The nice thing about that is then you have spare receiver you can use on something else.
Satellite receivers are technically full range but they are intended to add diversity to Spectrum receivers so you will not improve the reliability of your range which you may gain using a SPM4648. For a bit more money there is a Lemon RX with diversity and PPM that you could consider
This...
http://www.lemon-rx.com/shop/index.php?route=product/product&path=72&product_id=135
and if you have a rev6 an need a main RX to get it bound...
http://www.lemon-rx.com/shop/index.php?route=product/product&path=72&product_id=122
Note that SpecSat and S-Bus are pretty much equivalent as far as any theoretical performance improvements - S-bus might have a slight edge - although unless you are a multi-rotor ninja it is unlikely you will be able to tell the difference between those and PWM or PPM.
A slightly simpler solution is to use PPM since no additional soldering is required assuming you already have the RX header pins on your NAZE32. Orange has the cheapest solution...
http://www.hobbyking.com/hobbyking/...MX_Compatible_6Ch_2_4GHz_Receiver_w_CPPM.html
You only get 6 channels PPM but it does have diversity - the antennas leads are short so placement is a bit limited - funny that they claim it makes it easier
I'm not particularly a fan of Orange but if needs must...