The czech low-cost tire has high projected mileage and is good on snow, but lacks a bit of wet and dry performance. Pricewise, it can match the low-cost chinese tyres and in comparison, it's definitely a better option.
145/80 R13 doesn't belong to the most popular dimensions for winter tyres - there are tyre models available, which can be compared to 325/30 R21, 155/60 R15, 155/65 R13. Let's break down the sizing - 80 is height of the tyre, which is calculated as 80% of the tyre width (145mm), which means the sidewall height has 116 mm. The wheel diameter is R13, which means it fits to a 13 inch/330.2mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 195/50 R15(1809.56 mm), 265/30 R21(2175.24 mm), 195/65 R14(1913.54 mm), 265/40 R19(2182.15 mm), 200/55 R17(2047.69 mm), 265/55 R19(2431.91 mm), 205/50 R17(2000.57 mm). There are multiple speed indexes available for winter tyres in 145/80 R13: Q(160km/h), T(190km/h). The same goes for weight indexes: 74, 75.