Okay, so I just went to Kanda Sta. and took a look inside Takano Rika Garasu. Warning: Lots of photographs!
The shop features an array of lab supplies and equipment. Erlenmeyer flasks range from 600 yen for the small ones to 1600 yen for a 1 Litre one.
Unfortunately, I could not find the kinds of vials that look like a test tube with a screw on lid. The closest I could find was 20mm in diameter and 55mm in height (excluding the lid part) and was 630 yen for a pack of 10. There are slightly larger ones as shown in the background of the above photograph but they don't have a screw on lid.
They do have a small test tube with 18mm in diameter and 105mm in length, at 84 yen each. Combine that with a silicon bung and it should withstand pressure cooking, although you'd have to sterilize them separately. Rubber bungs (the black ones) are only good up to around 80 degrees celcius, so don't try to put them in boiling water.
On the bright side, they have large bottle brushes.
And 20L Polyethylene buckets that could act as a primary fermenter.
And best of all, polyethylene 20L carboys. 3360 yen. They come with a spigot, but I'd probably change it into a smaller one and then I could simply attack tubing to the spigot for easy racking. The mouth is small enough to be plugged with a rubber bung and an airlock. There is also a wide mouthed version which costs 100 more yen and requires drilling a hole into the lid for attaching an airlock, but its mouth is wide enough to stick your arm inside for better cleaning.
They also had hydrometers, polyethylene water tanks, test tube racks, plastic funnels of all sizes, beakers and a stir plate for 10,000 yen.
If you have any questions regarding the shop, I'll try to answer them (if I can remember the info)