Buy a bactericidal/quartz lamp and protect yourself from viruses:

20W - 60cm - $8.70
30W - 90cm - $9.78
36W - 1.20cm - $13.04
2x20W with a grid - 60cm - $15.22

Separate bulbs:

T-5 4W - $1.74
T-5 6W - $2.17
T-5 8W - $2.17
T-8 15W - $3.26
T-8 18W - $4.35
T-8 30W - $5.43
T-8 36W - $6.52