Price is right. This sheet is not clear; it is translucent. We are using it (in pieces over the next few years) to cover 5' by 10' raised vegetable beds over the Summer to kill weed seedlings before the following Spring. We used some of it this Summer on one bed to see whether it would work. It does - lets Sunlight in and traps heat and keeps out water just like we hoped it would. It is thick enough to resist tearing from any pooling rain water, flexible enough to wrap the edges around 2X4s used to hold the edges down against the bedsides, and tough enough to NOT stretch, break down, rip on board edges, shred where it contacted the ground, or get brittle from direct sunlight. I would not tack it onto an upright greenhouse, but it works well for our purpose. Oh, and it hosed off easily after we pulled it off so we can either reuse this piece on the next bed or recycle it (haven't decided yet but we have until Spring to do so).