Hawk’s dog walker charges $25 per week for 4 walks. Each additional walk is $10, and grooming can be added for an additional $35. Or Hawk can pay a flat rate of $250/month, which includes daily walks and 1 grooming. Hawk would also like to give a tip of either $5/week or 20% for the month. If Hawk pays the weekly rate for a total of 4 weeks with an additional walk every week plus 1 grooming, how much will each option cost with gratuity?

The weekly rate for 4 walks per week is 4 weeks * $25/week = $<<4*25=100>>100.

With the additional walk every week, there are 4 weeks * $10/additional walk = $<<4*10=40>>40.
Including the grooming, the total for the weekly option comes to $100 + $40 + $35 = $<<100+40+35=175>>175.
If Hawk pays the weekly rate, the tip will be $5/week * 4 weeks = $<<5*4=20>>20.
Including the tip, the total cost for the weekly option will be $175 + $20 = $<<175+20=195>>195.

With the monthly flat rate, the cost is $250/month.
The tip for the monthly option will be 20% * $250 = $50.
Including the tip, the total cost for the monthly option will be $250 + $50 = $<<250+50=300>>300.

Therefore, the weekly option with gratuity will cost $195 and the monthly option with gratuity will cost $300. Answer: \boxed{195, 300}.