| Summary of quarterly financial data |
The following financial data is a summary of the quarterly results of operations (unaudited) during and for the years ended November 30, 2018 and 2017: | | | | | | | | | | | | | | | | | | | | Three Months Ended | Fiscal 2018 | | Feb. 28 | | May 31 | | Aug. 31 | | Nov. 30 | Net Sales | | $3,994,350 | | $4,222,986 | | $4,222,906 | | $4,155,257 | Total Revenue | | 3,998,424 |
| | 4,225,240 |
| | 4,224,832 |
| | 4,158,257 |
| Cost of Sales | | 1,648,963 |
| | 1,859,301 |
| | 1,489,281 |
| | 1,535,795 |
| Gross Profit | | 2,345,387 |
| | 2,363,685 |
| | 2,733,625 |
| | 2,619,462 |
| Net (Loss) Income | | (3,220,659 | ) | | (292,320 | ) | | (203,672 | ) | | 394,885 |
| (Loss) Earnings Per Share: | | | | | | | | | Basic | | $ | (0.45 | ) | | $ | (0.04 | ) | | $ | (0.03 | ) | | $ | 0.07 |
| Diluted | | $ | (0.45 | ) | | $ | (0.04 | ) | | $ | (0.03 | ) | | $ | 0.07 |
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| | | | | | | | | | | | | | | | | | | | Three Months Ended | Fiscal 2017 | | Feb. 28 | | May 31 | | Aug. 31 | | Nov. 30 | Net Sales | | $4,265,078 | | $6,111,836 | | $5,329,753 | | $4,106,595 | Total Revenue | | 4,269,151 |
| | 6,115,910 |
| | 5,334,368 |
| | 4,110,669 |
| Cost of Sales | | 1,707,854 |
| | 2,345,980 |
| | 1,989,572 |
| | 1,404,370 |
| Gross Profit | | 2,557,224 |
| | 3,765,856 |
| | 3,340,181 |
| | 2,702,225 |
| Net Income | | 186,752 |
| | 698,550 |
| | 377,683 |
| | 568,196 |
| Earnings Per Share: | | | | | | | | | Basic | | $ | 0.03 |
| | $ | 0.10 |
| | $ | 0.05 |
| | $ | 0.08 |
| Diluted | | $ | 0.03 |
| | $ | 0.10 |
| | $ | 0.05 |
| | $ | 0.08 |
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