Had you asked for advice on a saw for doing scroll sawing I would 100% recommend you spend more and get a decent quality machine, however as you suggest you only want it to cut out shapes for carving rather than using a band saw then I would suggest one of the cheapo saws would do the job for you. Normally for people who want a saw to do intricate fretwork I would suggest avoiding the cheaper saws but for simple shapes it would do the job.
It's difficult to recommend a saw in the cheaper ranges as there are so many to choose from and to be honest if you study them you will notice that the majority look similar to each other, the reason for this is that they are basically the same saw but with different names on them, so buying one with a quality name on it does not mean that it is a better saw than a cheaper model with a less well known name attached.
Many of the saws with quality well known names may look a little more fancy with different protecting covers etc and a few embellishments over the dirt cheap models but underneath they are the same basic chassis and design. I have seen saws for as little as £39 with the less posh badges on them but the same basic saw with a posh name can cost well over £100.
If you only want the saw for cutting basic shapes I would suggest buying a cheap model, that way if you do decide later that you want to do more intricate work you have not wasted too much, however if you are thinking you might wish to do serious fretwork including internal cutting then forget the cheaper saws and buy a quality machine at the outset. A decent second-hand quality make would be far superior to a brand new machine in the cheaper ranges.
The Axminster AWFS16
http://www.axminster.co.uk/axminster-ho ... saw-501247 is a a cheap type machine and if you look around you will find lots of saws like this with all different names on them (as I mention above) This saw (or a similar different branded machine) would be fine for simple cutting of shapes etc.
Axminster AWFS18
http://www.axminster.co.uk/axminster-tr ... saw-501201 Different ball game, this is a quality machine and an almost carbon copy of the excellent (high priced)Hegner saws , this type is ideal for serious fretwork and has had good reviews here.
Note I am not suggesting the above two saws are the best for you just giving examples. Many people on the forum give good reports of quality saws such as the Delta ranges (not easy to get), the Axminster Excalibur lookalikes and others inc myself favour the Hegner ranges.
Hope some of my stuff above is of some help to you, if you have any questions please ask, there are lots of decent people in this forum happy to give advice and all are very knowledgeable.