Not sure about the quality and comfort, but I have seen a recommendation in ozbargain forum, hope it doesn't disappoint. Also not sure whether it is the lowest price ! If you are using one of this, then please do share your experience in comments.
Specifications from mydeal website:
Colour: White & grey
Materials: Mesh aluminium
Overall Dimensions: 70cm x 70cm x 109-120cm (WxDxH)
Overall Minimum Height: 109cm
Overall Maximum Height: 120cm
Seat Height: 44-54cm
Seat Back Height: 87cm
SGS BIFMA Certified
Warranty: 12 months Duke Living Warranty (Included)
Anyone know the max weight these are rated for?