I've been looking for silicone food storage bags for awhile at a discounted price to use for freezing as I find ziplock bag seals tend to degrade after a few times through the freezer. This brand seems to get pretty good reviews online.
They also have a couple of other sizes at a good discount:
Stasher Half Gallon Bag - Clear 1.9Litres @ $19.00 (RRP $44.99)
Stasher Sandwich Bag - Clear 0.5Litre @ $19.00 (RRP 29.99)
They have a few other colours as well, if you search for Stasher on their site.
Product Description:
Stashers are amazing! They are made from premium platinum silicone, so you can bake, microwave, sous vide, boil and freeze in a Stasher but that’s not all. Stasher bags are ideal for pantry organisation or for bulk shopping. Stasher bags are the perfect travel companion. Ideal for storing your toiletries for easy packing! Be careful with sharp objects though as they may puncture bag. Use soap + water or upper rack of dishwasher. Do not turn the bag inside out, as this can compromise the bag's sealed edges.
For the freezer, we use the plastic bags that bread comes in - we would be throwing them out if we didn't re-use them for freezer bags, so there is no additional waste from them, and they are free :-)
I find that we tend to accumulate the empty bags most weeks, and then when we make something or buy in bulk, we deplete the stock (they squash into almost nothing so no real space required).
I don't recall us having to purchase any bags just to use in the freezer in the recent past (last couple of years at least)..
Alan.