Router sorting

The best strategy is divide process to 3 parts:
Read
Sort
Print

Reading from and filling data list can be done via raw list of lists or list of objects like I made in example below.
Sorting you can make via bultin sorted function and key argument or use another way.
Printing the result, I don't sure how it must shown so I printed content without formatting, but you can change it.

```python
from functools import cmp_to_key
from operator import attrgetter


class Router:
    def __init__(self, name, wifi_spec, memory, price):
        self.name = str(name)
        self.wifi_spec = str(wifi_spec)
        self.memory = int(memory)
        self.price = int(price)


def router_cmp(r1: Router, r2: Router):
    # 1 - worse
    # -1 - better
    # 0 - tie
    if r1.price > r2.price:
        return 1
    if r1.price < r2.price:
        return -1
    if r1.memory < r2.memory:
        return 1
    if r1.memory > r2.memory:
        return -1
    if r1.name > r2.name:
        return 1
    if r1.name < r2.name:
        return -1
    return 0


def main():
    router_list = []
    # Input data
    with open('routers.txt') as f:
        for line in f.readlines():
            name, wifi_spec, memory, price = line.split(',')
            if wifi_spec in 'Wi-Fi 6' or wifi_spec in '802.11ax' or wifi_spec in 'ax' or wifi_spec in 'WiFi 6':
                if 'MiB' in memory:
                    m1 = int(memory[:-3])
                    memory = m1 * 1024
                elif 'GiB' in memory:
                    m2 = int(memory[:-3])
                    memory = m2 * 1024 * 1024
            router = Router(name, wifi_spec, memory, price)
            router_list.append(router)
    # Sort data
    sorted_router_list = sorted(router_list, key=cmp_to_key(router_cmp))
    # Print data
    for router in sorted_router_list:
        print(router.name, router.wifi_spec, router.memory, router.price, sep=',')


if __name__ == '__main__':
    main()

```

For example:
```txt
Router1,Wi-Fi 6,802MiB,10500
Router2,Wi-Fi 6,123MiB,13500
Router3,Wi-Fi 6,2GiB,10500
Router4,Wi-Fi 6,2GiB,10500
```

The output:
```txt
Router3,Wi-Fi 6,2097152,10500
Router4,Wi-Fi 6,2097152,10500
Router1,Wi-Fi 6,821248,10500
Router2,Wi-Fi 6,125952,13500
```