The duty on you is that your make salaat with your Muslim brothers in the masjid if you hear the call in your shop naturally, without needing something that amplifies the low and hard to hear sounds. Then if you are distant and you do not hear the sound of the call (adhaan) without the sound being amplified, then it becomes permissible for you to pray in your house or with some of your neighbours.
And it is established from the Prophet (صلى الله عليه وسلم) who said to a blind man who asked for permission to pray in his house: “Do you hear the call to prayer?” He said: ‘Yes’ He (صلى الله عليه وسلم) said: “Respond to it”. (Collected by Imaam Muslim in his Saheeh)
And his saying (صلى الله عليه وسلم): “Whoever heard the call (adhaan) and he did not come to it (the prayer), then there is no prayer for him except with an excuse”. (Narrated by Ibn Maajah, ad-Daraqutni, Ibn Hibbaan, and al-Haakim with a Saheeh chain)
And when you answer the muaddhin and you are distant and you endured the hardship on your feet or in the car, then there is a goodness for you and it is preferred and Allaah will write in your records that you went to the masjid and returned from it with sincerity and correct intention.
And it is established from the Prophet (صلى الله عليه وسلم): He said to a man whose house was far from al-Masjid an-Nabawi and he never missed the prayer (in congregation) with the Prophet (صلى الله عليه وسلم). It was said to him: If you were to buy a donkey you could ride upon it in the dark nights and in the burning sand. He said: I do not like my house to be situated by the side of the masjid, for I (eagerly) desire that my steps towards the masjid and back from it, should be recorded when I return to my family. Upon this the Messenger of Allah (صلى الله عليه وسلم) said: “Allaah has gathered all (rewards) for you”. (Collected by Imaam Muslim in his Saheeh)